Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hubu.edu.cn
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 16:17:01 UTC · ↺ Refresh
MX Hostnames
- mxbiz2.qq.com
- mxbiz1.qq.com
MX Priorities
- mxbiz1.qq.com: 5
- mxbiz2.qq.com: 10
A / AAAA Records
- 202.114.144.124 (no PTR)
Mail Server IPs
- 103.86.78.2 (no PTR)
- 103.86.78.3 (no PTR)
- 43.154.252.16 (no PTR)
- 43.154.252.202 (no PTR)
SOA Record
Raw SOA
dns.hubu.edu.cn dns.hubu.edu.cn 20241189 28800 7200 604800 3600
Primary NS (mname)
dns.hubu.edu.cn
Admin Email (rname)
dns@hubu.edu.cn
Serial
20241189
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns.hubu.edu.cn
dns2.hubu.edu.cn
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mail.qq.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- m49177745y4jwbbt6f0t74b2ptmnm2pt
- SPFv=spf1 include:spf.mail.qq.com -all
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